Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

CHECK THE DIESEL EXHAUST FLUID
NOTE:
Repair any DEF system component DTCs before continuing with this diagnostic procedure.
1. Collect a sample of diesel exhaust fluid from the system.
2. Visually inspect the fluid for signs of contamination or debris.
3. Test the quality of the fluid using litmus paper (supplied by parts) or by using an SPX DEF/UREA Refractometer 94-F-00K-108-456 or equivalent.
  NOTE:
  The diesel exhaust fluid should register approximately 9 ph with the litmus paper and 32.5 percent using a refractometer.
  
  Is the diesel exhaust fluid quality within specification and free of debris and contamination?
  
  Yes
  - Go To 2.
  No
  - Drain the diesel exhaust fluid from the tank and fill the system. If the fluid is contaminated, follow the cleaning procedure. Refer to TANK, Diesel Exhaust Fluid , Cleaning .
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE EXHAUST SYSTEM FOR LEAKS
1. Visually inspect the entire exhaust system for signs of a leak.
  Were any exhaust leaks found?
  
  Yes
  - Perform the appropriate repair.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 3.
CHECK THE DEF INJECTOR DECOMP TUBE FOR DEPOSITS
NOTE:
The diesel exhaust fluid will form hard deposits when exposed to air.
1. Remove the DEF Injector from the Decomp Tube. Refer to INJECTOR, Diesel Exhaust Fluid , Removal .
2. Visually inspect the Decomp Tube for diesel exhaust fluid deposits.
  Were any deposits found?
  
  Yes
  - Clean the deposits from the Decomp Tube.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 4.
CHECK THE DEF INJECTOR
1. Reconnect the DEF Injector harness connector.
2. Place the DEF Injector in a container to capture the fluid sprayed.
3. Turn the ignition on.
4. With the scan tool, navigate to Systems Tests and actuate the Diesel Exhaust Fluid Doser Pump Override Test.
  NOTE:
  This Test will run for six minutes before timing out. The amount of flow may fluctuate through out the test, therefore the test must be allowed to run completely in order for the results to be accurate. The fluid should spray out as a mist. There should be no dripping from the holes in the DEF Injector at any time during the duration of the test procedure.
5. Measure the amount of fluid sprayed after the test times out.
  Does the fluid sprayed measure between 85 ml and 115 ml?
  
  Yes
  - Replace the SCR Catalyst in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Replace the DEF Injector in accordance with the service information. Refer to INJECTOR, Diesel Exhaust Fluid , Removal .
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .